From: James Zern <jzern@google.com>
Date: Thu, 15 Aug 2013 01:35:22 +0000 (-0700)
Subject: vp9_dx_iface: check for NULL/0-size input
X-Git-Tag: v1.3.0~603^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=20395189cd30d743eaaec0678373e0a9743b1c6b;p=libvpx

vp9_dx_iface: check for NULL/0-size input

avoids a crash caused by issue #585

Change-Id: I301595ee0227699b0da6f0dad6d870dd546e94ef
---

diff --git a/vp9/vp9_dx_iface.c b/vp9/vp9_dx_iface.c
index 05029b92e..66a3c2b93 100644
--- a/vp9/vp9_dx_iface.c
+++ b/vp9/vp9_dx_iface.c
@@ -368,6 +368,8 @@ static vpx_codec_err_t vp9_decode(vpx_codec_alg_priv_t  *ctx,
   uint32_t sizes[8];
   int frames_this_pts, frame_count = 0;
 
+  if (data == NULL || data_sz == 0) return VPX_CODEC_INVALID_PARAM;
+
   parse_superframe_index(data, data_sz, sizes, &frames_this_pts);
 
   do {